Brake-pipe for railway-cars.



E. WITZENMANN.

BRAKE PIPE FOR RAILWAY CARS.

APPLICATION FILED AUG. 16, 1909.

Patented $311.21, 1913.

EMIL WITZENMANN, OF PFORZHEIM, GERMANY.

BRAKE-PIPE FOR RAILWAY-CARS.

Application filed August 16, 1909.

Specification of Letters Patent. Patented Jan. 21, 1913.

Serial No. 512,955.

To all whom it may concern:

Be it known that I, EMIL WITZENMANN,

' manufacturer, a subject of the Grand Duke of Baden, residing at No. 48Holzgartenstrasse, Pforzheim, German Empire, have invented new anduseful Improvements in Brake-Pipes for Railway-(Jars, of which thefollowing is a specification.

The subject of my invention is a brake pipe for railway cars,constructed of a socalled spiral metallic hose (that is to say, aflexible pipe consisting of a spirally wound metal tape of suitablecrosssection), having a rubber pipe secured thereto so as to insurethoroughly tight joints.

The essential feature of the present invention resides in the peculiarconstruction of the connecting-pieces presented by the ends of the brakepipe, and in the peculiar manner in which the ends of the rubber pipeare secured to these connecting-pieces.

My invent-ion is illustrated in the accompanying drawing.

The drawing shows a longitudinal section and part elevation.

a is the spiral metallic hose of well known description. The metallichose (1 has end pieces I) attached thereto, said end pieces having cones0 formed thereon. A rubber pipe f incases the metallic hose a, the endsof said pipe being drawn over the cones c and a protective sheathing kis tightly fitted over the rubber pipe Conical collars g are fitted overthe sheathing at the ends thereof and-suitable means are provided forconnecting the conical collars g with the end pieces 6 and for drawingsaid collars tightly to the end pieces in order to securely clamp theends of the rubber pipe and'sheathing between the cones 0 and conicalcollars g, thereby insuring a thoroughly tight joint therebetween.

Having thus described my invention, I declare that what I claim is Abrake pipe for railway cars, comprising a spiral metallic hose, endpieces screwed thereon, cones formed on the end pieces, a rubber pipeincasing the metallic hose and extending over the said cones, asheathing tightly fitting over this rubber pipe, conical collars fittedover the said sheathing at the ends thereof, and means connecting theconical collars with the end pieces for drawing the collars tightly totheend pieces in order to clamp the ends of the rubber pipe andsheathing, substantially as described.

In witness whereof I have hereunto signed my name this 31st day of July1909, in the presence of two subscribing witnesses.

EMIL VVITZENMANN.

Witnesses G. CHARLES, HERMANN KRLiNER.

